Gas-burner-control mechanism



April 19, 1927. 1,625,010

R, T. WINDT GAS BURNER CONTROL MECHANISM Filed May 14, 1926 l l llIlPatentes Apr. ia7 i927.

iran ESTATES RUDOLPH T. WINDT, 0F ST. LOUISrMISSIOURI.

GAS-BUER-QONTROL MECHANISM. l

Application led May 14, 1926. Serial No.,109,066.

This invention relates to gas burner control mechanism.

An object of the invention is to provide' a control mechanism for a gasburner comprising a valve for controlling thepassage of gas to theburner, a motor operatively connected with the valve, and means locatedat any selected pointwvith respect to the motor for causing the motor tooperate to open and to close the valve, as desired.

Another object of the invention is to provide an apparatus of thecharacter and enlbodying the subject mattei' mentioned, comprisingswitches under control of the driv` ing connections by which the motor.open ates the valve for opening the electric. circuit controlling themotor so that the valve may be rselectively operated by the motor toopen and to closed positions and maintained in such positions by saidconnections until the motor'is again operated.

Other objects of the invention. will appear from the followingdescription, reference.

being made t in Which- Fig. 1 is a view showing one form of theinvention applied to a gas supply pipe for the burner of a .waterheater.

Fig..2 is a diagrammatic view of the invention showing the switchdevicesthat are 'under control of the motor located in a pre` ferrcdrelationship. ,j

Fig. 3 is a detail view showing the relationship of the elements of oneof the o the accompanying drawing,

'switches to the motor driven connectionsl whereby the valve isoperated. I

The gas supply pipe 1 contains a valve chamber 2. The pipe 1 leads to aburner, not shown, enclosed Within a casing 3 preferably provided With adoor 4.- to afford ac cess to the inside and with a pipe or flue 5 .toexhaust the fumes. LA tube 6 has one end colinectedwith a supply pipe lbeyond the inlet side of the valve casing 2 and has its open endterminating adjacent 'to .the burner vWherever located and serves as apilot light burner to which a small quan-v tity of gas is delivered forthe burner when the valvey in the valve chamber 2 is closed..

The tube 6 isequipped with a control A valve 7. s

A valve 8 extends across the chamber 2 and is operative to open andclose said.v

chamberto permit or to prevent the passa e of gas therethrough. to theburner. T e

valve body 8is provided with a passage 9 therethrough. The valve may beturned to position in which the 'passage 9 is in continuation ot thepassage through the chamber 2, or to position in which said passage 1stransverse of the chamber and closed.

A housing 10 enclosing the motor driven mechanism is in connection/Withthe valve chamber. The stem of the .valvel body 8 ex tends into thehousing 1() and has a pinion ,11 attached thereto inv permanent meshwith a larger pinion 12 supported on an axis 13 at right'angles to theIaxis of the pinion 11. lt is ,obvious that when the pinion 12 isroltateditlie valve 8 will be turned and that by proper control of thepinion 12 the valve may be controlled to opeir and torclose the gassupply pipe, as desired.

. An electric motor 14 is mounted on sup ports 15Min the housing 10. Theshaft 16 of the motor has a pinion 17 attached there-r, to and inconstant mesh With the .pini0n'12.vr

The circuit wire 18 leads directly to the motor and the other circuit'Wire 19 leadsvto a contactmember'2() and has a branch 2l leading toanother contact member 22 of a switch. The'switch includes an additionalcontact member 23 Afrom which` a Wire 24 leadsto a connection with aswitch Contact member 25 in the housing. The rswitch contact member 25extends transversely of the axis of the pinion 12 and has a projection26 ,on its end with which a resilient switch clement 27 is arranged tocontact.

Another wire 28 leads from the contact VnectionA with a switch contactmember'30 supported from the-*housing 10 similari'to the switch contactmember 25. The switch contact member 30'is provided with a projection 31with which a resilient; switch member 32 lis arranged to contact. Awire`33 leads from connection with the switch members 27 land 32 toproper connection with the opposite side ofthe motor from the connectionwith the Wire 18. I' g lin the embodiment shown the pinion`-12 isprovided with four projections designated a, b, c. and'al respectively,andare arranged to operate the resilient'switch members 27 and 33successively to control the operation of the motor, so that the valve 8will be operated to and stopped in open or closed positions., .Y

The switch member 34 provided with an ing the projection d to raise theresilient the gap between the contact members 20 and 29 to close thecircuit to the ,motor through the wire 28, the switch contact member130, the resilient switch member 32 and the Wire 33; or to bridge thegap between the contact members 22 and 23 to close the circuit to theLmotor'through the wire 24, the switch contact membei` 25, the resilientswitch element 27 and the wire 33. The knob 35 operates a visualindicator 36 to indicate the on or ed position of the valve, the onposition being'that in which said valve is open and the ofi positionthat in' which said valve is closed. rlhe 0E position is that in whichthe switch member 34 bridge/s the gap between the contact members 2O and29, and in which the projections a pulls theA tresilient switch member32 out of lcontact `with the projection 31, thus holding open thecircuit to the motor.

To start the motor and turn the valve 8 one4 quarter revolution,

which will open the valve, the, switch meinsy ber 34cris turned tobridge'the gap between the ycontact members 22 and 23, thus closing thecircuit to the motor through said switch, the wire 24,.the switchcontact member 25, the resilient'switch element 27 and the wire 33. rlhemotor then operates to turn the inion 1 2l one-'eighth of a revolution,causswitlch A member 27\out..of contact with the projection 26 of thecontact member 25, thereby opening the jcircu'it tothe motor at the timethe valve is open permitting a continuous flow of 'gas to the burner.When the circuit is open the motor stops and holds the valve 8 open. Thegas assing from the burner is ignited bythe pi ot light and there is' acontinuous iow of gas until the motor is again operated to close'thevalve 8.

. When it is desired to close the valve 8 and stop the How of gas to theburner, the switch member 34 is turned to^bridge the gap betweenthecontact members 20 and'29, thus closing thek circuit tothe motor throughsaid switch, the wire 28, the contact member 30 and its projection 31,the resilient switch member 32 and the wire 33. The motor then operatesto turn the pinion 12 one-eighth of a revolution which also turns thevalve 8 te closed position. When the motorturns the pinion V12one-eighth of a revolution andthe valve 8 to closed position as stated,the pro- ,jectioii (Z engages and raises the resilient contact member 32out of contact with theprojection 31,thus opening the circuit to themotor causing the motor to stop and hold the valve closed. rthisoperation can be repeat-v ed as often as it is `desired to use thedevice,\\ each Xof the projections (1,6, c and 'd' functioningalternately and successively as described in reference to the projectiond.

1I aia aware that the invention may. be

varied i'n numerous respects without departure from the nat-ure andprinciple there.-

of, and specifically l do not restrictl myself to any particular form ofconnections for operating the valve from the motor. It is obvious thatsuch connections for operating said valve may be varied widely withoutdeparture from the nature and principle of the invention.

, What l claim and desire to secure by Letters Patent is l. A device ofthe character described comprising a valve rotative successively in onedirection, a pinion attached` to said valve, a pinion supported on anaxis at right angles to the axis of said first pinion and meshingtherewith, a motor, a pinion rotative on an axis at right angles to theaxis of said second pinionn and meshing with said second pinion, acircuit for supplying energy to the motor,a switch from closing saidcircuit, and devices operated by one' of said pinions for opening saidcircuit.

2. A device of the character described i comprising avalve rotativesuccessively in one direction, a pinion attached to said valve, a pinionsupported on an axisat right angles to the axis of said first pinion andmeshing therewith, a motor, a pinion rotative on an axis at right,angles to the axis pinion for opening-said circuit and causing lof saidsecond pinion and meshing with said v second pinion,a circuit forsupplying energy f `to the motor, a switch for closing said circuit, anddevices operated by said secondthe motor to stop and hold said valve inn supplying energy to the motor, a switch foi" closin saidcirciiit, andmeans operated by one o said pinions for openino` said circuit when saidvalve .has moved fl'iom open to closed position. y

4. A device of then character described comprising a rotative valve, apinion in connection with said valve, a motor, a iiiion ro- `tative bysaid motor, a third pinion meshing with said two pinions for rotatingsaid valve whentlieinotoris running, an electric circuit for saidinotor,a switch for closing said circuit, circuit make and break devices.located adjacent to said third pinion, and

elements on said third pinion for operating said devices to opensaidcircuit and cause the motor to stop and hold said valve in closedposition. y

5. A device of the'character described comprising a valve movablesuccessively in one direction to open and to closed'positions, an tostart in any position in which the motor electric motor, connectionsoperated by said is stopped, and means operated by said conmotor foroperating said valve intermitnections for opening said circuit andcausing 10 tently in a single direction of rotation to thel motor tostop and hold said Valve alter- 5 said positions, an electric circuitfor supnately in open and in closed positions.

plying energy to said motor, a switch settable to close said circuit tocause the motor RUDOLPH T. WINDT.

